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Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging

From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode
Date: Mon, 19 Sep 2011 12:48:07 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2

On 09/19/2011 12:36 PM, Alexander Graf wrote:
>>    80880000-808fffff : macio
>>      00060000-0007ffff : macio-nvram
>>      00020000-00020fff : pmac-ide
>>      00016000-00017fff : cuda
>>      00013000-0001303f : escc-bar
>>      00008000-00008fff : dbdma
>>      00000000-00000fff : heathrow-pic
>>    80800000-8080ffff : vga.rom
>>    80000000-807fffff : vga.vram
>>    800a0000-800bffff : vga-lowmem

Well what I don't understand is how this corresponds to the lowmem region here. 
If I simply #if 0 the chain4 code out, everything works as expected.

It's at the wrong address. It should be at 000a0000, but not be visible since it's outside the pci hole. IIUC.

>>  Not sure - I still haven't understood how the memory api works.
>  Thanks for reminding me to write up slides for tomorrow's code overview 
session.  I'll start with a general explanation.

What code overview session?

At the usual kvm weekly time & place, I'll do a walkthrough of the memory API theory and practice.

error compiling committee.c: too many arguments to function

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